Those trim routers such as the one Bill links to are a good size, one drawback however is that they do not [all] have variable speeds like the dremel. This can make a big difference depending on what materials you are cutting. For example, the trim router would probably be good for wood, not so much for foam or plastics. Good link!

UPDATE: Sorry, Bill. I didn’t read those specs closely enough! The router you link to does have variable speeds.

The model PVR20EVSK I referenced has variable speed, adjustable from 16,000 RPM to 35,000 RPM. Not quite the same range of 5,000 to 35,000 RPM, that the Dremel has, but still a lot more versatile than single speed.

It’s about half the price of the Dremel 4000 and is 2 amps (So I say it’s a pretty powerful rotary tool). Not sure how the reliability compares, but reviews from the walmart website seem to be quite good and same from amazon.